40135579 has 12 divisors (see below), whose sum is σ = 44278360. Its totient is φ = 36352800.

The previous prime is 40135577. The next prime is 40135609. The reversal of 40135579 is 97553104.

It is not a de Polignac number, because 40135579 - 2¹ = 40135577 is a prime.

It is a super-2 number, since 2×40135579² = 3221729403330482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40135573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49084 + ... + 49894.

Almost surely, 2^40135579 is an apocalyptic number.

40135579 is a deficient number, since it is larger than the sum of its proper divisors (4142781).

40135579 is a wasteful number, since it uses less digits than its factorization.

40135579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 40135579 is about 6335.2647142799. The cubic root of 40135579 is about 342.3811483119.

The spelling of 40135579 in words is "forty million, one hundred thirty-five thousand, five hundred seventy-nine".